Picked this up this evening on another site:
you can check your own info on line
https://esgm.sgk.gov.tr/Esgm/KimlikSorgulamayou need your turkish kimlik no the year you were born ikamet Tezkere No this is the number on your RP underneath residence permit..not the number at the very bottom fill those in and get to the next site there will be a drop down menu headed duyurular go down to GSS Tescil sorgulara and it will give the date you entered the scheme and the date when you next need an RP if thats there then you should still be covered.
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I did it and it worked for me!
My details are correctly covered - I am 62 and have retired in my blue book but not in receipt of pension but my wife's (aged 52) entry brought up a:
Hos Geldiniz Gillian - no details for her but a warning notice saying in Turkish:
"have you registered your details etc"
When we applied it was in my name with my wife as my dependent as a married couple.
The fact that it recognised her name makes me think that is what it does for "dependents"??
Does anyone know if that assumption is correct or have the same experience?